Immunology is the study of immune system and important of biological science. If immune system is not functioning as it should, it can result disease, such as autoimmunity. Immunology has uses in various fields of medicine, oncology, rheumatology, virology, bacteriology, dermatology etc.
Enzymology is the study of structure and functions of enzymes and relation between them. The classification of enzyme includes hydrolases, hydrases, mutases, polysaccharides synthesizing enzymes.